Backyard Charging Tests failed

[RANDY COX]

Originally Posted by Scott>72-GMC

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You can also get a bypass wire connector for the newer alternators
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this would be your best bet.I did this with my Burb,my lights stayed brighter,it was a good conversion.

[THE BOSS]

in all my years i have never heard of that magnetism trick. i wouldn't go by that.

sounds like you have a broken wire from the regulator to the alt, the alt is not being told to charge. or you have a defective part.

when i bought a engine for my truck i took the alternator and starter to a local starter rebuild shop, he asked me if I'd like it upgraded to a 1 wire, i said sure, either them work or they dont, everything including the regulator internal. it was the same price too.

I'll have to look to see what i did with the unused wires. I think i zip tied them to the wires on the regulator, the hot post is in the same place, just the regulator wires are not needed any longer.

[Blainethemono]

Originally Posted by Andy4639

Look for the voltage regulator on drivers side of core support. It's what regulats the voltage in a stock truck. If the alternator hasn't been changed out for a late model one.

Hi Andy...... I recently had a charging failure as well, so I took my altenator to the local Auto Zone to check and it was bad. Replaced it for about $50, but still not charging, 12.4 volts off and 12.2 running. Volt reading does not change regardless of engine rpm.. Ive heard that the stock regulator, (64 C-10), sometimes fail prematurely, so your saying that the one you have pictured will swap out for my stocker?? 76 350, 4bbl, yada, yada...

Thanx!

[Andy4639]

Originally Posted by Blainethemono

Hi Andy...... I recently had a charging failure as well, so I took my altenator to the local Auto Zone to check and it was bad. Replaced it for about $50, but still not charging, 12.4 volts off and 12.2 running. Volt reading does not change regardless of engine rpm.. Ive heard that the stock regulator, (64 C-10), sometimes fail prematurely, so your saying that the one you have pictured will swap out for my stocker?? 76 350, 4bbl, yada, yada...

Thanx!

If you are running the external regulator then yes it should be a direct swap.